The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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Amount of the cost of borrowed funds accounted for as interest expense.

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The net result for the period of deducting operating expenses from operating revenues.

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No definition available.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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Business and Geographic Segments - Reconciliation of Operating Profit (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of segment operating income to consolidated income before income taxes
Operating (loss) income	$ (156.4)us-gaap_OperatingIncomeLoss	$ (7.8)us-gaap_OperatingIncomeLoss	$ 3.6us-gaap_OperatingIncomeLoss	$ (12.1)us-gaap_OperatingIncomeLoss	$ (67.5)us-gaap_OperatingIncomeLoss	$ 25.7us-gaap_OperatingIncomeLoss	$ 12.4us-gaap_OperatingIncomeLoss	$ 11.1us-gaap_OperatingIncomeLoss	$ 10.1us-gaap_OperatingIncomeLoss	$ 16.5us-gaap_OperatingIncomeLoss	$ 11.4us-gaap_OperatingIncomeLoss	$ 24.9us-gaap_OperatingIncomeLoss	$ (172.7)us-gaap_OperatingIncomeLoss	$ (18.3)us-gaap_OperatingIncomeLoss	$ 62.9us-gaap_OperatingIncomeLoss
Interest expense													(307.2)us-gaap_InterestExpense	(119.5)us-gaap_InterestExpense	(100.0)us-gaap_InterestExpense
Earnings (loss) from equity investments													(7.6)	1.5	28.1
Loss on early extinguishment of debt													(25.9)	(5.9)	(15.5)
Gain on sale of equity interest													14.5	0	0
Other (expense) income, net													4.0us-gaap_OtherNonoperatingIncomeExpense	(1.1)us-gaap_OtherNonoperatingIncomeExpense	1.3us-gaap_OtherNonoperatingIncomeExpense
Net loss from continuing operations before income taxes													(494.9)	(143.3)	(23.2)
Operating Segments
Reconciliation of segment operating income to consolidated income before income taxes
Operating (loss) income													(1.1)	90.5	148.6
Unallocated corporate costs
Reconciliation of segment operating income to consolidated income before income taxes
Operating (loss) income													$ (171.6)	$ (108.8)	$ (85.7)